What should be used to wash synthetic fiber ropes?

Using mild detergent or fabric softener in lukewarm water is the appropriate method for washing synthetic fiber ropes. This approach helps to effectively clean the ropes without causing damage to the fibers. Mild detergents are designed to remove dirt and debris without being harsh or abrasive, which is particularly important for synthetic materials that can be sensitive to strong chemicals. Additionally, lukewarm water is optimal for dissolving the detergent without being too hot, which could potentially weaken the fibers.

Other options propose methods that either involve harsh chemicals or temperatures that could be damaging. For instance, bleach and hot water can degrade the integrity of synthetic fibers, while using plain water might not adequately remove the accumulated dirt or contaminants, leaving the rope less clean and potentially less safe for use.